Window ventilator and screen



P'. L. HEDBERG wm'now VENTILATOR AND SCREEN. APPLICATION FILED FEB.17,I919.

I Patented May 27 1919.

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P. Enema-.- WINDOW VENTILATOR AND SCREEN.

. ABPLICATION FILED FEB. 17, I919.

Patented May 27, 1919.

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PETER L. HEDBERG, or CHICAGO, rumors.

WINDOW vEN'rILA'ron AND SCREEN;

Specification of Letters Patent.

Application filed February 17, 1919. Serial mi; 277,675.

Toall whom it may concern:

Be it known that I, PETER L. HnbBnR'c, a citizen of the United States, residing at the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Window Ventilators and Screens, of which the following is a specification.

This invention relates to' improvements in window ventilators and screens of a type wherein co-acting screen-carrying frames slidably engaging each other are employed in a window opening or similar locality for ventilation and foreXcluding dust, dirt and insects, and it consists in certain peculiarities of the construction, novel arrangement and operation of the various parts thereof, as will be hereinafter more fully set forth and specifically claimed.

The principal object of the invention is to provide a ventilator and screen of simple construction, few parts, easy assemblage of said parts and readily adjustable to window openings of varying widths without detaching any of its members, which can be located between the lower sash rail of the lower sash and Window sill, orbetween the upper rail of the, upper sash and the top of the window frame, or at said locations outwardly of the sashes, in such a manner as to permit of thorough ventilation, yet, so as to screen and purify the air. A further and important object is to provide the frames of the device with means for securely yet detachably holding the screens of cloth or Woven wire taut and in place thereon, to

the-end, that they can be readily removed for the purpose of washing or cleaning the same, and easily replaced. Still another object is to provide means for the automatic adjustment, if desired, of the frames to the openings in which they may be located. Various other objects and advantages will be disclosed in the following description and operation.

In the accompanying drawings, which serve to illustrate the invention Figure 1 is a plan or top edge View of the ventilator and screen showing its parts partially extended;

Fig. 2 is a face view thereof with the parts in a similar position;

Fig. 3 is a cross sectional view taken on line 33 of Fig. 2 looking in, the direction indicated by the arrows;

Fig. a is a fragmental perspective view of parts of-one of the frames of thedevice showing them in the act of'being assembled; Fig. 5"is a top plan view illustrating a modification in the construction of the ventilator and screen; 1 I

Fig. 6 is a fragmental face'view thereof; Fig. 7 is a cross sectional view taken on line 77 of Fig. 6 looking in the direction indicated by the arrows; showing the application of the deviceito a window opening by placing it directly under thelower sash or outwardly thereof, a portion of said sash being shown in the dotted lines, and i Fig. 8 is a perspective view illustrating another modification in the construction of the ventilator and screen.

Like numerals of reference refer to corresponding parts throughout the different views of the drawings. I Referring now to Figs. 1 to 4 inclusive, the frames of the device are indicated as a whole by the reference numerals 10 and 11, which are located one on the other, and each of which is composed of'an upper rail or bar 12 and a lower rail or bar 13,.which are connected together attheir ends. by means of end pieces 14, thus forming a rec,-. tangular' frame with a rectangular opening; The ends of the upper and lower rails, as well as the ends of the end pieces 14: are. bypreference formed with mortises 15 (see Patented 27,1919;

Fig. l) to register with oneanother, .so that as to present flush surfaces. Each of the rails or bars, 12 and 13, as well as each of the end pieces 14, of each frame, is provided on its surface opposed to the other frame with a longitudinally extended ledge 16, each of whichis located inwardly from the outer edge of the rail or bar on which it is mounted, and by preference these ledges are made integral with said rails or bars. As is clearly shown in Fig. 4, each of the ledges 16 has in its outer surface a groove 17, and each of the rails 12, as well as each of the end pieces 14: has on its surface adjacent to its ledge a kerf or depression 18,which. as shown, are located near the perimeters of the frames. When the members of the" frames are assembled, it will be understood 7 that the ledges 16 of said members will practically form a continuous ledge as is clearly shown in Fig. 2 of the drawings. On the surface of each of the adjacent end pieces of the frames ll and 12 is mounted ward or from each a cleat 19, which has a rabbet 20 at each of its ends to receive tenons 21, with which each of the top and bottom rails of each frame is provided on its inner surface. Located on the face of each of the ledges 16, when the parts are assembled as shown in Figs. 2 and 3, is a screen 22 of cloth or woven wire, the edges of which overhang the outer edges of the cleats 16, which edges are forced. into and held in the grooves 17 of the ledges by means of detachable clamping cleats 23, each of which has on its inner surface a rib 24 to extend into said grooves. By this arrangement, it is apparent that the screens 22 will be held in a taut condition on the faces of the ledges 16 and over the openings in the framesin such a manner as to prevent their removal or dislocation, except by detaching the clamping cleats 23, each of which is provided with one or more pivoted catches 25 to engage the kerfs or depressions 18 in the rails 12 and 13 and end pieces 14. Each of the catches 25 may have on its outer surface a lip 26 by means of which the catch can be readily turned on its pivot so as to cause them to engage the kerfs or be disengaged therefrom. It will be understood that the adjacent'end portions of the frames 10 and 11 overlap each other, as shown in Figs. 1 and 2, thus providing a space between the adjacent end pieces 16 and 19 of said frames, which end pieces may be united by a contracting spring 27, having its ends connected to the inner surfaces of said end pieces, which spring will act to draw the said end pieces toward each other, thus automatically extending the frames .10 and 11 from their retracted or telescoped positions. This spring can be detached at either of its ends or removed when it is desired to fold the frames together for shipment.

In Figs. 5 to 7 inclusive, is shown a modification which consists in employing a pair of frames and screens of the same construction as illustrated in Figs. 1 to at inclusive and above described, except that the clamping cleat 23 on the upper rail of one of the frames (see Fig. 6) is shorter thai'rthe corresponding cleat on the corresponding frame of the other construction (see Fig. 2) in order to allow the clamping cleat 23 on the inner end of said frame 'to extend at its upper end so as to be'flush with the upper surfaces of the upper rails of the frames. In this modified construction a plate or fiat strip 28 is secured to the upper surface of the upper rail of one of the frames, and said plate or strip has therein a longitudinal recess or slot to receive a tongue 30 extended from another fiat plate or strip 31 secured to the upper surface of the upper rail of the other frame. By this arrangement. it is obvious that when the frames are moved toother the tongue 30will slide in the recess or slot 29, thus permitting the frames to be adjusted to any suitable width. By the use of the flat strips or plates 28 and 31, it is apparent that the device can be located in the window opening outwardly of the lower sash, as shown at 32 by dotted lines in Fig. 7 of the drawings, or the device may be located directly under the lower sash, as shown at 33 by dotted lines in said figure of the drawings. This arrangement, when the device is located as shown at, 32 with respect to the sash, will permit the size of the opening in the frames to be regulated, and it is. evident that the sash can be raised or lowered without removing the ventilator and screen, which, of course, will be properly supported at its ends to the jambs of the window sill. By extending the vertical clamping cleat 23 upwardly alt theinner end of one of the frames, as shown in Fig. 6, it is apparent that if any dust or soot should enter between the plates 28 and 31 on the upper surface of the horizontal cleat 23 on the top of frame 10, it will be excluded from the room by reason of the closure provided by the clamping cleat 23 at the inner end of said frame. In order to enable the cleat 23 on the upper rail of the frame 10 to be removed without interference by the plates 28. and 31 the said cleat is made narrower than in the other or first described construction, and the kerf 18 in said upper rail is located farther inwardly from its edge so as to permit said cleat after being released by the catch 25 to be moved outwardly far enough to release the rib 2t on said cleat from the groove 17, thereby freeing the edge of the screen held by said cleat.

In Fig. 8 is shown another modification which is of exactly the same construction as illustrated in Figs. 5 to 7 inclusive and above described, except that a flat plate 34L mounted on the upper rail of the frame 12, and having an L-shaped recess at one of its ends is employed to receive a portion of another fiat plate 36, mounted on the upper surface of the upper rail of frame 11 of the device.

Having thus fully described my invention deslre to secure by what I claim as new and Letters Patent is 1. In a device of the class described, the combination with a frame having on one of it faces a ledge corresponding in shape with said frame but of less size and having a longitudinal groove in each of its outer walls, of a screen of flexible material located on the face of the ledge and overhanging its edges, and a clamping-cleat located at each outer edge of said ledge and each having a rib to force and hold the edges of the screen in said grooves.

2. In a device of the class described, the combination with a frame having onone of its faces a ledge corresponding in, shape to said frame but of less size and having grooves in its perimeter, the frame also having on its said face a kerf or depresslon near each of its outer edges, of a screen of flexible material located on the face of the ledge and overhanging its edges, a detachable clamping-cleat located at each outer edge of said ledge and each having a rib to force and hold the edges of the screen in said grooves, and a catch on each cleat to engage said depressions.

3. In a device of the class described, the combination with a pair of superimposed and slida-bly engaging frames, each having on its opposed face a ledge corresponding in shape with the frame but of less size and each ledge having a longitudinal groove in each of its outer walls, of a screen of flexible material located on the face of each ledge and overhanging its edges, and a clampingcleat located at each outer edge of each ledge and each cleat having a rib to force and hold the edges of the screen in said grooves.

4. In a device of the class described, the combination with a pair of superimposed and slida-bly engaging frames, each having on its opposed face a ledge corresponding in shape with the frame but of less size and each ledge having a longitudinal groove in each of itsouter walls, of a screen of flexible material located on the face of each ledge and overhanging its edges, a spring connecting the adjacent ends of said frames, and a clamping-cleat located at each outer edge of each ledge and each cleat having a rib to force and hold the edges of the screen in said grooves.

5. In a device of the class described, the combination with a pair of superimposed ,and slidably engaging frames, each having on its opposed face a ledge corresponding in shape with the frame but of less siz and each ledge having a longitudinal groove in each of its outer walls, each frame also having on its opposed face a kerf or depression near each of its outer edges, of a screen of flexible material located on the face of each ledge and overhanging its edges, and a detachable clamping-cleat located at each outer edge of each ledge and each cleat having a rib to force and hold the edges of the screen in said grooves, and a catch on each cleat to enga re said depressions.

6. In a device of the class described, the combination with a pair of superimposed frames each having on its opposed face a ledge corresponding in shape with the frame but of less size and each ledge having a longitudinal groove in each of its outer walls, each of said frames also having on its opposed inner longitudinal edges a tenon and on the inner face of their adjacent ends a Copies of this patent may be obtained for five cents each, by addressing the Commissioner of fate Washington, D. G,

transverse cleat each having a rabbet in each of its ends to receive said tenons, of a screen of flexible material located on the face of each ledge and overhanging its edges, and a clamping-cleat located at each outer edge of each ledge and each cleat having a rib to force and hold the edges of the screen in said grooves.

7. In a device of the class described, the combination with a pair of superimposed frames each having on its opposed face a ledge corresponding in shape with the frame but of less size and each ledge having a longitudinal groovein each of its outer walls, each of said frames also having on its opposed inner longitudinal edges a tenon and on the inner face of their adjacent ends a transverse cleat each having a rabbet in each of its ends to receive said tenons, each of said frames further having on its opposed face a kerf or depression near each of its outer edges, of a screen of flexible material located on the face of each ledge and over hanging its edges, and a detachable clamping-cleat located at each outer edge of each ledge and each cleat having a rib to force and hold the edges of the screen in said grooves, and a catch on each cleat to engage said depressions.

8. In a device of the class described, the combination with a pair of superimposed rectangular frames each having on its opposed face a ledge corresponding in shape with the frame but of less size, and each ledge having a longitudinal groove in each of its outer walls, each of said frames also having'on its opposed inner longitudinal edges a tenon and on the inner face of their adjacent ends a transverse cleat each having at each of its ends a rabbet to receive said tenons, of a flat strip longitudinally mount ed on the upper rail of one of said frames and having a longitudinally extended cutout in its end adjacent the other frame, another flat strip similarly mounted on the upper rail of the last named frame and having a portion to fit in said cut-out, each of said frames further having on its opposed face a kerf or depression near each of its outer edges, a screen of flexible material located on the face of each ledge and overhanging its edges, a detachable clampingcleat located at each outer edge of each ledge and each of said cleats having a rib to force and hold the edges of the screen in said grooves, the vertical cleat at the inner end of each frame extended upwardly and terminating flush with the upper surface of the rails at the top ofthe frames, and a catch on each clamping-cleat to engage said depressions.

PETER L. I-IEDBERG. 

